Some refinement

Moved more complex appimage stuff to seperate package (github.com/CalebQ42/GoAppImage)
Moved settings to a seperate file for organization
Some work to allow asyncronouse app loading (Since goappimage is super slow)
Comments to show what's going to be there in the future.

appimg/CTesting.go

@@ -1,79 +0,0 @@
-package appimg
-
-// Thanks to probono for the majority of this C code: https://discourse.appimage.org/t/accessing-appimage-desktop-file/173/4?u=calebq42
-
-/*
-#cgo CFLAGS: -I/usr/lib
-#cgo LDFLAGS: -L/usr/lib/libappimage.so -lappimage
-
-#include <appimage/appimage.h>
-#include <stdlib.h>
-
-int char_length(char** in){
-	int i = 0;
-	for (; in[i] != NULL ; i++);
-	return i;
-}
-*/
-import "C"
-import (
-	"errors"
-	"os"
-	"strings"
-	"unsafe"
-)
-
-var (
-	//ErrNotAppImage return if the given location does not point to an AppImage
-	ErrNotAppImage = errors.New("file is not an appimage")
-)
-
-//Thanks to https://stackoverflow.com/questions/36188649/cgo-char-to-slice-string for char** to string slice code :)
-
-//GetDesktopFile tries to find the desktop file inside the appimage at appimageLoc and extract it to extractLoc.
-//extractLoc is deleted first to provent conflicts.
-func GetDesktopFile(appimageLoc string, extractLoc string) (*os.File, error) {
-	if !strings.HasSuffix(appimageLoc, ".AppImage") {
-		return nil, ErrNotAppImage
-	}
-	err := os.Remove(extractLoc)
-	if err != os.ErrNotExist {
-		return nil, err
-	}
-	cextractLoc := C.CString(extractLoc)
-	defer C.free(unsafe.Pointer(cextractLoc))
-	cloc := C.CString(appimageLoc)
-	defer C.free(unsafe.Pointer(cloc))
-	cfiles := C.appimage_list_files(cloc)
-	defer C.appimage_string_list_free(cfiles)
-	cfilesLength := C.char_length(cfiles)
-	tmpslice := (*[1 << 30]*C.char)(unsafe.Pointer(cfiles))[:cfilesLength:cfilesLength]
-	for _, v := range tmpslice {
-		tmp := C.GoString(v)
-		if strings.HasSuffix(tmp, ".desktop") {
-			C.appimage_extract_file_following_symlinks(cloc, v, cextractLoc)
-			break
-		}
-	}
-	return os.Open(extractLoc)
-}
-
-//ExtractFile tries to extract the file at fileLoc to extractLoc from the appimage at appimageLoc.
-//extractLoc is deleted first to provent conflicts.
-func ExtractFile(appimageLoc string, fileLoc string, extractLoc string) (*os.File, error) {
-	if !strings.HasSuffix(appimageLoc, ".AppImage") {
-		return nil, ErrNotAppImage
-	}
-	err := os.Remove(extractLoc)
-	if err != os.ErrNotExist {
-		return nil, err
-	}
-	cextractLoc := C.CString(extractLoc)
-	defer C.free(unsafe.Pointer(cextractLoc))
-	cloc := C.CString(appimageLoc)
-	defer C.free(unsafe.Pointer(cloc))
-	cfileLoc := C.CString(fileLoc)
-	defer C.free(unsafe.Pointer(cfileLoc))
-	C.appimage_extract_file_following_symlinks(cloc, cfileLoc, cextractLoc)
-	return os.Open(extractLoc)
-}